The National Mall is usually the center of every visitor's trip to Washington DC. This tree-lined area of parkland stretches two and a half miles from the Potomac River to the United States Capitol on Capitol Hill and is adjoined by the White House. At one end of the National Mall, known as West Potomac Park, the Lincoln Memorial faces the Reflecting Pool with a good view of Arlington Memorial Bridge, Constitution Gardens, the Tindal Basin and the Washington Monument. Further towards Capitol Hill are a number of museums and galleries, among which are many of the Smithsonian Institution's museums, including the National Museum of Natural History, the National Air and Space Museum, National Museum of the American Indian, and the Smithsonian Institution building.